no
You can get the Item finder from Professor Oaks in Pokemon LeafGreen. Professor Oaks is found on route 11 just out side of Vermillion City.
No.
No.
route 20
give the red scale to professor oaks friend that's in oaks house
Samuel
in india
only with a event
The Kant Region Pokemon Professer
one of professor oaks aides gives it to you
that was an event to get shaymin! i dont think you can get it the only way to get oaks letter is from an AR code